<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>类式组件-State的简写方式</title>
    <!-- 引入react核心库 -->
    <script src="../React-js/react.development.js"></script>
    <!-- 引入react-dom,用于支持react操作DOM -->
    <script
      type="text/javascript"
      src="../React-js/react-dom.development.js"
    ></script>
    <!-- 引入babel,用于将jsx转换为js -->
    <script type="text/javascript" src="../React-js/babel.min.js"></script>
  </head>
  <body>
    <!-- 准备好一个“容器” -->
    <div id="test"></div>

    <script type="text/babel">
      // 1.创建组件
      class Weather extends React.Component {
        // 初始化状态
        state = { isHot: false, wind: '微风' };

        render() {
          console.log(this);
          const { isHot, wind } = this.state;
          return (
            <h1 onClick={this.WeatherChange}>
              今天天气很{isHot ? '炎热' : '寒冷'},{wind},
            </h1>
          );
        }
        //自定义方法———— 要用 赋值语句的 + 箭头函数
        WeatherChange = () => {
          console.log(this);
          const isHot = this.state.isHot;
          this.setState({ isHot: !isHot });
        };
      }
      // 2.渲染组件到页面
      ReactDOM.render(<Weather />, document.getElementById('test'));
    </script>
  </body>
</html>
